Header space still shows after params='zc_Header=false'

Header space still shows after params='zc_Header=false'

I am trying to completely remove the header in reports embedded in an HTML page but the white space still shows even if I input the parameter
  1.  params='zc_Header=false'
I hid all of the parameters but this still does not do the job. How do I hide this white space on top of the report?